User guide

RAM01
Version: 1.0 Date: 10/11/2008
Tel: [phone] Fax: [phone] E-mail: [e-mail] http://www.hoperf.com
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RAM01 ISM Band OOK Receiver Module
DESCRIPTION
HopeRF’s RAM01 is a highly-integrated, low power, multi-channel OOK receiver module designed for use in
applications requiring FCC or ETSI conformance for unlicensed use in the 433, 868 and 915 MHz bands. Used in
conjunction with HopeRF’s transmitters, the RAM01 is a flexible, low cost, and highly integrated solution that does
not require production alignments. All required RF functions are integrated.
The RAM01 has a completely integrated PLL for easy RF design, and its rapid settling time allows for fast frequency
hopping, bypassing multipath fading, and interference to achieve robust wireless links. The PLL’s high resolution
allows the usage of multiple channels in any of the bands. The baseband bandwidth (BW) is programmable to
accommodate various deviations, data rate. The module employs the low-IF approach; therefore, no external
components are needed in a typical application. The RAM01 is a complete analog RF and baseband receiver,
including a multi-band PLL synthesizer with an LNA, down converter mixers, baseband filters and amplifiers, and
demodulator.
The module support Stand alone mode, that means it can receive data without MCU configuration. This mode
mainly simplify the customer application complexity and can be replace traditional super- regenerative receiver and
super-heterodyne receiver.
but frequency can be selected.
for more details about RAM01, please see RA01’s datasheet from http://www.hoperf.com
FEATURES
• Fully integrated receiver module
• No alignment required in production
• Fast settling, programmable, high-resolution PLL
• Fast frequency hopping capability
• Programmable bit rate (up to 40 kbps)
• 50 ohm single-ended antenna input
• Programmable baseband bandwidth (85 to 340 kHz)
• Data filtering and clock recovery
• RX pattern recognition
• SPI compatible serial control interface
• Readable registers
• Clock and reset signals for microcontroller
• 64 bit RX data FIFO
• Accurate Wake-up timer
• Low battery detector
• 2.2 to 3.8 V supply voltage
• Low power consumption
• Low standby current (typ. 0.2 μA)
TYPICAL APPLICATIONS
• Remote control
• Home security and alarm
• Wireless keyboard/mouse and other PC peripherals
• Toy control
• Remote keyless entry
• Tire pressure monitoring
• Telemetry
• Personal/patient data logging
• Remote automatic meter reading